IE ProCore Performance Downpipe - Audi B9 S4 & S5

The IE ProCore Downpipe for your Audi B9 S4 or S5 delivers an improved exhaust note and increased flow. Our in-house engineered 6" 400CPSI catalytic converter channels substantial flow to support upgraded engine tunes and larger turbochargers. The specialty tri-core design and precious metal coatings align with ECU emissions requirements so that you can upgrade without the check engine light.

• IE ProCore catalyst - No check engine light
• High-flow design - Supports hybrid & large turbo power
• Increases sound - Full and enriched exhaust note
• Bolt-on direct fit - No cutting, no welding, no hassle
• High quality - Stainless steel, TIG welded, & investment casting

HIGH-FLOW
6" 400CPSI
CATALYTIC CONVERTER

IE's in-house engineered ProCore Catalyst features our own tri-core design with a specialized coating, enabling it to pass vehicle readiness monitors without triggering a check engine light. An advanced molecular bonded wash process applies the precious metal coatings to ensure long-life reliability. Whether you're looking to improve the exhaust note from your 3.0T or building a track-destroying hybrid turbo setup, enjoy your exhaust without the annoying check engine light.